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ConsoleKeyInfo.Key (Propiedad)

Actualización: noviembre 2007

Obtiene la tecla de consola a la que el objeto ConsoleKeyInfo representa.

Espacio de nombres:  System
Ensamblado:  mscorlib (en mscorlib.dll)

public ConsoleKey Key { get; }
/** @property */
public ConsoleKey get_Key()

public function get Key () : ConsoleKey

Valor de propiedad

Tipo: System.ConsoleKey
Valor System.ConsoleKey que identifica la tecla de consola que se presionó.

En el siguiente ejemplo de código se muestra cómo utilizar una propiedad Key en una operación de lectura.

// This example demonstrates the Console.ReadKey() method
using System;
using System.Text;

class Sample 
{
    public static void Main() 
    {
    ConsoleKeyInfo cki;
//               0        1         2         3         4         5         6
//               123456789012345678901234567890123456879012345678901234567890
    String m1 = "This example discovers the console and modifier keys " +
                "that you press.\n";
    String m2 = "Press any combination of CTL, ALT, and SHIFT modifier keys, " +
                "and a console key.\nPress the Escape (Esc) key to quit: ";
    String m3 = "You pressed ";
    String m4 = " (character '{0}').";
    StringBuilder sb = new StringBuilder();   
//
// The Console.TreatControlCAsInput property prevents this example from
// ending if you press CTL+C, however all other operating system keys and 
// shortcuts, such as ALT+TAB or the Windows Logo key, are still in effect. 
//
    Console.TreatControlCAsInput = true;
    Console.WriteLine(m1);
    do 
    {
        Console.WriteLine(m2);
        sb.Length = 0;
        cki = Console.ReadKey(true);
        sb.Append(m3);
        if (cki.Modifiers != 0)
            {
            if ((cki.Modifiers & ConsoleModifiers.Alt) != 0)
                sb.Append("ALT+");
            if ((cki.Modifiers & ConsoleModifiers.Shift) != 0)
                sb.Append("SHIFT+");
            if ((cki.Modifiers & ConsoleModifiers.Control) != 0)
                sb.Append("CTL+");
            }
        sb.Append(cki.Key.ToString());
        sb.AppendFormat(m4, cki.KeyChar);
        sb.AppendLine().AppendLine();
        Console.WriteLine(sb.ToString());
    } while (cki.Key != ConsoleKey.Escape);
// Note: This example requires the Escape (Esc) key.
    }
}
/*
This example produces results similar to following text:

This example discovers the console and modifier keys that you press.

Press any combination of CTL, ALT, and SHIFT modifier keys, and a console key.
Press the Escape (Esc) key to quit:
You pressed A (character 'a').


Press any combination of CTL, ALT, and SHIFT modifier keys, and a console key.
Press the Escape (Esc) key to quit:
You pressed SHIFT+A (character 'A').


Press any combination of CTL, ALT, and SHIFT modifier keys, and a console key.
Press the Escape (Esc) key to quit:
You pressed ALT+SHIFT+CTL+A (character ' ').


Press any combination of CTL, ALT, and SHIFT modifier keys, and a console key.
Press the Escape (Esc) key to quit:
You pressed Escape (character '?').
*/


// This example demonstrates the Console.ReadKey() method
import System.*;
import System.Text.*;

class Sample
{
    public static void main(String[] args)
    {
        ConsoleKeyInfo cki;
        //        0        1         2         3         4         5         6
        //        123456789012345678901234567890123456879012345678901234567890
        String m1 = "This example discovers the console and modifier keys "
            + "that you press.\n";
        String m2 = "Press any combination of CTL, ALT, and SHIFT modifier keys, "
            + "and a console key.\nPress the Escape (Esc) key to quit: ";
        String m3 = "You pressed ";
        String m4 = " (character '{0}').";
        StringBuilder sb = new StringBuilder();
        //
        // The Console.TreatControlCAsInput property prevents this example from
        // ending if you press CTL+C, however all other operating system keys and 
        // shortcuts, such as ALT+TAB or the Windows Logo key, are still in
        // effect.
        //
        Console.set_TreatControlCAsInput(true);
        Console.WriteLine(m1);
        do {
            Console.WriteLine(m2);
            sb.set_Length(0);
            cki = Console.ReadKey(true);
            sb.Append(m3);
            if (!(cki.get_Modifiers().Equals((Int32)0))) {
                if (!((cki.get_Modifiers() & ConsoleModifiers.Alt).ToString().
                    Equals(Convert.ToString(0)))) {
                    sb.Append("ALT+");
                }
                if (!((cki.get_Modifiers() & ConsoleModifiers.Shift).ToString().
                    Equals(Convert.ToString(0)))) {
                    sb.Append("SHIFT+");
                }
                if (!((cki.get_Modifiers() & ConsoleModifiers.Control).ToString().
                    Equals(Convert.ToString(0)))) {
                    sb.Append("CTL+");
                }
            }
            sb.Append(cki.get_Key().ToString());
            sb.AppendFormat(m4, (System.Char)cki.get_KeyChar());
            sb.AppendLine().AppendLine();
            Console.WriteLine(sb.ToString());
        } while (!(cki.get_Key().Equals(ConsoleKey.Escape)));
        // Note: This example requires the Escape (Esc) key.
    } //main
} //Sample
/*
This example produces results similar to following text:

This example discovers the console and modifier keys that you press.

Press any combination of CTL, ALT, and SHIFT modifier keys, and a console key.
Press the Escape (Esc) key to quit:
You pressed A (character 'a').


Press any combination of CTL, ALT, and SHIFT modifier keys, and a console key.
Press the Escape (Esc) key to quit:
You pressed SHIFT+A (character 'A').


Press any combination of CTL, ALT, and SHIFT modifier keys, and a console key.
Press the Escape (Esc) key to quit:
You pressed ALT+SHIFT+CTL+A (character ' ').


Press any combination of CTL, ALT, and SHIFT modifier keys, and a console key.
Press the Escape (Esc) key to quit:
You pressed Escape (character '?').
*/


Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

.NET Framework y .NET Compact Framework no admiten todas las versiones de cada plataforma. Para obtener una lista de las versiones compatibles, vea Requisitos de sistema de .NET Framework.

.NET Framework

Compatible con: 3.5, 3.0, 2.0
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